package com.liu.juc.lock;

import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

/**
 * @author LIU
 * @version 1.0
 * @description TODO
 * @date 2024/2/20 10:34
 * 线程间定制通信 互斥  lock实现
 */
public class MessageLock2 {
    public static void main(String[] args) {
        ShareResource share = new ShareResource();
        new Thread(() -> {
            for (int i = 0; i < 10; i++) {

                try {
                    share.print5(i);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }, "AA").start();

        new Thread(() -> {
            for (int i = 0; i < 10; i++) {

                try {
                    share.print10(i);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }, "BB").start();

        new Thread(() -> {
            for (int i = 0; i < 10; i++) {
                try {
                    share.print15(i);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }, "CC").start();

    }


}


// 资源类
class ShareResource {
    // 共享
    private int flag = 1;

    private Lock lock = new ReentrantLock();

    private Condition c1 = lock.newCondition();
    private Condition c2 = lock.newCondition();
    private Condition c3 = lock.newCondition();

    public void print5(int loop) throws InterruptedException {
        lock.lock();

        try {
            while (flag !=1){
                c1.await();
            }
            for (int i = 0; i < 5; i++) {
                System.out.println(Thread.currentThread().getName() + " :: " + i + "轮数 :" + loop );

            }
            // 修改标志位，通知
            flag = 2;
            c2.signal();
        } finally {
            lock.unlock();
        }
    }
    public void print10(int loop) throws InterruptedException {
        lock.lock();

        try {
            while (flag !=2){
                c2.await();
            }
            for (int i = 0; i < 10; i++) {
                System.out.println(Thread.currentThread().getName() + " :: " + i + "轮数 :" + loop );

            }
            // 修改标志位，通知
            flag = 3;
            c3.signal();
        } finally {
            lock.unlock();
        }
    }
    public void print15(int loop) throws InterruptedException {
        lock.lock();

        try {
            while (flag !=3){
                c3.await();
            }
            for (int i = 0; i < 15; i++) {
                System.out.println(Thread.currentThread().getName() + " :: " + i + "轮数 :" + loop );

            }
            // 修改标志位，通知
            flag = 1;
            c1.signal();
        } finally {
            lock.unlock();
        }
    }
}
